2 * Copyright 2000, International Business Machines Corporation and others.
5 * This software has been released under the terms of the IBM Public
6 * License. For details, see the LICENSE file in the top-level source
7 * directory or online at http://www.openafs.org/dl/license10.html
10 /* serverLog.c - Server logging */
12 /* Information Technology Center */
15 /* Function - These routiens implement logging from the servers */
17 /* ********************************************************************** */
19 #include <afsconfig.h>
20 #include <afs/param.h>
31 #include <sys/param.h>
35 #include <afs/procmgmt.h> /* signal(), kill(), wait(), etc. */
46 #if defined(AFS_PTHREAD_ENV)
49 static pthread_mutex_t serverLogMutex;
50 #define LOCK_SERVERLOG() assert(pthread_mutex_lock(&serverLogMutex)==0)
51 #define UNLOCK_SERVERLOG() assert(pthread_mutex_unlock(&serverLogMutex)==0)
56 #define NULLDEV "/dev/null"
59 #else /* AFS_PTHREAD_ENV */
60 #define LOCK_SERVERLOG()
61 #define UNLOCK_SERVERLOG()
62 #endif /* AFS_PTHREAD_ENV */
74 static int (*threadNumProgram) (void) = dummyThreadNum;
76 static int serverLogFD = -1;
79 int serverLogSyslog = 0;
80 int serverLogSyslogFacility = LOG_DAEMON;
81 char *serverLogSyslogTag = 0;
86 int mrafsStyleLogs = 0;
87 static int threadIdLogs = 0;
89 static char ourName[MAXPATHLEN];
92 SetLogThreadNumProgram(int (*func) (void) )
94 threadNumProgram = func;
98 WriteLogBuffer(char *buf, afs_uint32 len)
102 (void)write(serverLogFD, buf, len);
109 return (*threadNumProgram) ();
113 vFSLog(const char *format, va_list args)
122 currenttime = time(0);
123 timeStamp = afs_ctime(¤ttime, tbuffer, sizeof(tbuffer));
124 timeStamp[24] = ' '; /* ts[24] is the newline, 25 is the null */
125 info = &timeStamp[25];
127 if (mrafsStyleLogs || threadIdLogs) {
128 num = (*threadNumProgram) ();
130 (void)afs_snprintf(info, (sizeof tbuffer) - strlen(tbuffer), "[%d] ",
132 info += strlen(info);
136 (void)afs_vsnprintf(info, (sizeof tbuffer) - strlen(tbuffer), format,
139 len = strlen(tbuffer);
142 if (serverLogSyslog) {
143 syslog(LOG_INFO, "%s", info);
147 (void)write(serverLogFD, tbuffer, len);
150 #if !defined(AFS_PTHREAD_ENV) && !defined(AFS_NT40_ENV)
151 if (!serverLogSyslog) {
153 fflush(stderr); /* in case they're sharing the same FD */
161 FSLog(const char *format, ...)
165 va_start(args, format);
166 vFSLog(format, args);
173 int loglevel = (intptr_t)param;
175 ViceLog(0, ("Reset Debug levels to 0\n"));
177 ViceLog(0, ("Set Debug On level = %d\n", loglevel));
185 SetDebug_Signal(int signo)
190 #if defined(AFS_PTHREAD_ENV)
191 if (LogLevel > 1 && threadNumProgram != NULL &&
199 #if defined(AFS_PTHREAD_ENV)
200 if (threadIdLogs == 1)
205 #if defined(AFS_PTHREAD_ENV)
206 DebugOn((void *)(intptr_t)LogLevel);
207 #else /* AFS_PTHREAD_ENV */
208 IOMGR_SoftSig(DebugOn, (void *)(intptr_t)LogLevel);
209 #endif /* AFS_PTHREAD_ENV */
211 (void)signal(signo, SetDebug_Signal); /* on some platforms, this
212 * signal handler needs to
214 } /*SetDebug_Signal */
217 ResetDebug_Signal(int signo)
223 #if defined(AFS_PTHREAD_ENV)
224 DebugOn((void *)(intptr_t)LogLevel);
225 #else /* AFS_PTHREAD_ENV */
226 IOMGR_SoftSig(DebugOn, (void *)(intptr_t)LogLevel);
227 #endif /* AFS_PTHREAD_ENV */
229 (void)signal(signo, ResetDebug_Signal); /* on some platforms,
230 * this signal handler
233 #if defined(AFS_PTHREAD_ENV)
234 if (threadIdLogs == 1)
238 OpenLog((char *)&ourName);
239 } /*ResetDebug_Signal */
243 SetupLogSignals(void)
245 (void)signal(SIGHUP, ResetDebug_Signal);
246 /* Note that we cannot use SIGUSR1 -- Linux stole it for pthreads! */
247 (void)signal(SIGTSTP, SetDebug_Signal);
249 (void)signal(SIGPIPE, SIG_IGN);
254 OpenLog(const char *fileName)
257 * This function should allow various libraries that inconsistently
258 * use stdout/stderr to all go to the same place
260 int tempfd, isfifo = 0;
261 char oldName[MAXPATHLEN];
262 struct timeval Start;
263 struct tm *TimeFields;
264 char FileName[MAXPATHLEN];
269 if (serverLogSyslog) {
270 openlog(serverLogSyslogTag, LOG_PID, serverLogSyslogFacility);
274 /* Support named pipes as logs by not rotating them */
275 if ((lstat(fileName, &statbuf) == 0) && (S_ISFIFO(statbuf.st_mode))) {
280 if (mrafsStyleLogs) {
282 FT_GetTimeOfDay(&Start, 0);
284 TimeFields = localtime(&t);
286 if (strncmp(fileName, (char *)&ourName, strlen(fileName)))
287 strcpy((char *)&ourName, (char *)fileName);
289 afs_snprintf(FileName, MAXPATHLEN, "%s.%d%02d%02d%02d%02d%02d",
290 ourName, TimeFields->tm_year + 1900,
291 TimeFields->tm_mon + 1, TimeFields->tm_mday,
292 TimeFields->tm_hour, TimeFields->tm_min,
295 renamefile(fileName, FileName); /* don't check error code */
296 tempfd = open(fileName, O_WRONLY | O_TRUNC | O_CREAT | (isfifo?O_NONBLOCK:0), 0666);
298 strcpy(oldName, fileName);
299 strcat(oldName, ".old");
301 /* don't check error */
303 renamefile(fileName, oldName);
304 tempfd = open(fileName, O_WRONLY | O_TRUNC | O_CREAT | (isfifo?O_NONBLOCK:0), 0666);
308 printf("Unable to open log file %s\n", fileName);
311 /* redirect stdout and stderr so random printf's don't write to data */
312 (void)freopen(fileName, "a", stdout);
313 (void)freopen(fileName, "a", stderr);
315 setvbuf(stderr, NULL, _IONBF, 0);
317 setbuf(stderr, NULL);
320 #if defined(AFS_PTHREAD_ENV)
321 assert(pthread_mutex_init(&serverLogMutex, NULL) == 0);
322 #endif /* AFS_PTHREAD_ENV */
324 serverLogFD = tempfd;
330 ReOpenLog(const char *fileName)
333 #if !defined(AFS_NT40_ENV)
337 if (access(fileName, F_OK) == 0)
338 return 0; /* exists, no need to reopen. */
340 #if !defined(AFS_NT40_ENV)
341 if (serverLogSyslog) {
345 /* Support named pipes as logs by not rotating them */
346 if ((lstat(fileName, &statbuf) == 0) && (S_ISFIFO(statbuf.st_mode))) {
354 serverLogFD = open(fileName, O_WRONLY | O_APPEND | O_CREAT | (isfifo?O_NONBLOCK:0), 0666);
355 if (serverLogFD > 0) {
356 (void)freopen(fileName, "a", stdout);
357 (void)freopen(fileName, "a", stderr);
359 #ifdef SETVBUF_REVERSED
360 setvbuf(stderr, _IONBF, NULL, 0);
362 setvbuf(stderr, NULL, _IONBF, 0);
365 setbuf(stderr, NULL);
370 return serverLogFD < 0 ? -1 : 0;